Joint Power and Secret Key Queue Management for Delay Limited Secure Communication

—In recent years, the famous wiretap channel has been revisited by many researchers and information theoretic secrecy has become an active area of research in this setting. In this paper, we design a wireless communication system that achieves constant bit rate data transmission over a block fading channel, securely from an eavesdropper that listens to the transmitter over another independent block fading channel. It is well known that, the method of sending secure information using the binning techniques inspired by the wiretap channel fails to secure the information at times when the eavesdropper channel has favorable conditions over the main channel. This phenomenon is called secrecy outage. In our system, however, we exploit the times at which the main channel is favorable over the eavesdropper channel for us to be able to transmit some random secret key bits along with the data bits. These key bits are stored in a separate key buffer at the transmitter as well as the receiver, a...

• Type: Journal
• Year: 2010
• Where: INFOCOM
• Authors: Onur Güngör 0002, Jian Tan, Can Emre Koksal, Hesham El Gamal, Ness B. Shroff
• Keywords: Communications, INFOCOM 2010, Key Buffer, Main Channel, Wiretap Channel